GM Service Manual Online
For 1990-2009 cars only

Anti-Corrosion Materials Notice for Chevrolet Colorado Pickup - 4WD 2004

Notice: Anti-corrosion compounds have been applied to the interior surfaces of some metal panels to provide rust resistance. When servicing these panels in areas on which this material has been disturbed, or when installing new panels, avoid corrosion damage by coating with anti-corrosion compound.